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https://github.com/OpenMP/Examples.git
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43 lines
996 B
Fortran
43 lines
996 B
Fortran
! @@name: parallel.1
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! @@type: F-fixed
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! @@compilable: yes
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! @@linkable: yes
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! @@expect: success
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SUBROUTINE SUBDOMAIN(X, ISTART, IPOINTS)
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INTEGER ISTART, IPOINTS
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REAL X(*)
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INTEGER I
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DO 100 I=1,IPOINTS
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X(ISTART+I) = 123.456
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100 CONTINUE
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END SUBROUTINE SUBDOMAIN
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SUBROUTINE SUB(X, NPOINTS)
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INCLUDE "omp_lib.h" ! or USE OMP_LIB
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REAL X(*)
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INTEGER NPOINTS
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INTEGER IAM, NT, IPOINTS, ISTART
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!$OMP PARALLEL DEFAULT(PRIVATE) SHARED(X,NPOINTS)
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IAM = OMP_GET_THREAD_NUM()
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NT = OMP_GET_NUM_THREADS()
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IPOINTS = NPOINTS/NT
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ISTART = IAM * IPOINTS
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IF (IAM .EQ. NT-1) THEN
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IPOINTS = NPOINTS - ISTART
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ENDIF
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CALL SUBDOMAIN(X,ISTART,IPOINTS)
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!$OMP END PARALLEL
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END SUBROUTINE SUB
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PROGRAM PAREXAMPLE
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REAL ARRAY(10000)
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CALL SUB(ARRAY, 10000)
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END PROGRAM PAREXAMPLE
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